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The TV in your home is very different from the television sets of just a few years ago. moodboard/Image Source via Getty Images

How does a television set work?

Pictures and sound, flying through the air to a box in your house? Back in the 1940s, it seemed like a miracle.
Exposure notification systems alert people when they’ve been exposed to the coronavirus but don’t record the information. AleksandarGeorgiev/E+ via Getty Images

How Apple and Google let your phone warn you if you’ve been exposed to the coronavirus while protecting your privacy

Bluetooth wireless communication makes it possible to track when people have been exposed to people infected with the coronavirus. The right cryptography scheme keeps alerts about exposures private.
Apps that warn about close contact with COVID-19 cases are key to relaxing social distancing rules. Walter Bibikow/Stone via Getty Images

How Apple and Google will let your phone warn you if you’ve been exposed to the coronavirus

Bluetooth wireless communication makes it possible to track when people have been exposed to people infected with the coronavirus. The right cryptography scheme keeps alerts about exposures private.
Are toys sharing too much information on the internet? mhong84/Shutterstock.com

4 ways ‘internet of things’ toys endanger children

As Amazon introduces a new smart-home device aimed at children, it’s important to know many internet-connected toys are not secure, putting kids’ security and privacy at risk.

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